Spinning spindle



Aug. l5, 1939 F. c. LINN SPINNING 'SPINDLE Filed March 12, 1937 Inventor warwklvinm b s Attorrw ey Patented Aug. 15, 1939A v{UNl'riazD STATES- SPINNING SPINDLE Frank C. Linn, Swampsoott, Mass., assignor to General Electric Company, a corporation oi New York Application Mal'cli 12, 1937, Serial No. A130,533

Si Claims.

My invention relates to high speed vertical snaft spinning devices, such as vertical shaft motors. l

Vertical shaft high speed spinning' spindles 5 are widely used in the textile industry for driving spinning devices, rayon buckets, vor. the like, and since it is necessary for these spindles ordinarily to operate at speeds above 6,000 R.. P. M. and well above one or more critical speeds of the shaft,

l some provision usually is made for damping csy cillations ofA the` shaft as it passes through its critical speeds to prevent excessive vibrations of the shaft-and thetransmission of these vibrations to vfthe spinning frame.

l An o ject of my invention is to provide an im.

, lproved spinningdevice of .this type, such that,the

shaft` andthe devices* driven therebycan pass through-thecritical speedsl without excessive vibrationsI of the shaft or its support when coming upto normal operating speed. f

. y-Further objects and advantages lofmy invention will ,become ,apparentfand' my invention ,willA b'eloetter.` understood .from the A'following descriptionfreferring to the accompanying drawing, :and l5 the, features of novelty which Acharacterize my invention will be pointed out-with particularityinspecification.

the claims annexed .to and Lforming part of, this For'v a betterlunderstanding of inventiom.y i0 reference is made to the accompanying' drawing," wherein Fig. lis apartial sectional elevation-of` a41 spinning motor embodying my invention; and

Fig.,2 4is a sectional view taken along line 2 5-2` the bearinghousingA of Fig.. 1, with a part of i5 broken away. H .Y

' Referringuto the draw-ing, Ifhavel shown a rayon spinning motor havingva stationarymern- -f ber -I0 including a core ,structure II` provided with a suitablestator field exciting winding'. I2.

L0 Themotor is energized by 'current from a source,y

of electrical powerY supply. connectedto' the .stator u winding' -terminal I3,` A .rotatable'memberl ,fl4'- having ,a squirrel' cage :winding lisV mounted .on xa verticallyv extending .v shaft I 5:' arranged to; drive 2 L5 a spinning'.fdevice.,L'I'hestationaryA memberwoi.

. the motor isisecured in` ahousing IIi'fby clamps@ I Ifattached toiiangesA I8 by screwsyl Q ;Anupper end .shield portion `2li roi the housing I 6.: is :formed: ,f with an :axial opening therein through-whiclr'the :s: i0 upper end 2Iiof-theshaftl'5extends..Anadapter ,22, ismountedlon:the@tapered'.uppenendl-f2iffoie.: r k y ranged-betweenanannular; vdisk 39 ,supported x 1 withinrthe. iiange `3l!` andppmmunicates y,Witht'.,b1.., x p

f =lia1lbeari ng,126.V Whenqthe `drive shaft rotates they shaft:` land :y supportsy a: removableA spinning wouter race vv29l yfittedwi'izhirra7 ange 30 y forme on the upper .endf ofthefbearingfhou'sin'g'-24.11 bearing cover plate y f isf: secured fby f threaded' be spilled out of the spinning bucket. With such an arrangement it has been found unnecessary to make the motor shaft of corrosion-resistant material, as the casing 20 protects it from the deteriorating effects of acids used in the spinning 5 process.

The. lower end shield of the motor is provided with an elongated hollow bearing housing 24 arranged to support the motor and the spinning device, and is resiliently supported to aid in l0 damping out oscillations which might produce harmful vibrations, and .isv secured to the stator housing I6 by three screws 25 equidistifintlyV spaced n Vabout the upper periphery of thebearing housing 24. f In order' to` supportl the'rotatable member 'l5 of the.v motor, a ballbearingp26'is`arrangedy interi 'j mediate the endsl of-the`l shaft I5 f and `asleeve bearing `2`I is: arrangedaboutv ,thev 'lower end thereof. -Thejballbea'ring-'ZB is-providedwith inner race 28 tightly-'fitted O'n the shaft#Hrb'elow'20j the 'rotatable member I4 of 'th fmotorj and an l .engagement with 'thee-flange 30" andi 'extnds' ove to prevent the new of l:lubrifcatirig' cil past the l i 1 .housin'g'r24.. The` bearing housingf-servesf'as' 'al i lubricantreservoirvand' lubricating oil 33 4can bei suppliedfthereto through'a: fillingcupf-34f'secured'-35 to the' upper end of,.the' housingffA- drain'plug I .35 is threadediinto an openingvformedsi @.thef

bottomo'f "thebearing -housing 24..v ,y `In order 'to-lubricate theballbearing '26.,` the 31. formeduthereon'-spacedabovelfrom the sleevel f `bearing fand" is: tapered @with lincreasing--.diameter :from .the shoulder"Silvstofthe vball bearing. The:v cylindricalv-,sleeveI-'is arrangedv in closelyspaced i relation:aboutv thisfztaperedf .portion of .-1 the ,driver `4,5 .shaftljrand-fsmallppenings, 38 are.1 formed ,inthe V. sleeve, .below :the shoulder 13.1 and;V above .the boss f- 321to'. provideg'a .communicationbetween the sleeve .f 5 f3 l.; andthe. lubricant .reservoir 33,1 The ,lower ,end

ingv ,support-.3.2 .and thc-upper and. iS. 100.5615( .afm

tapered end 36 of the shaft and the sleeve 3| to the ball bearing 26. The opening between the disk 39 and the upper end of the sleeve 3l provides for drainage of any excess lubricant from the bearing 26 back into the reservoir 33 within the bearing housing. The upper surface of the bearing housing 24 is formed with a groove 40 and is provided with an opening 4I communicating with the interior of the bearing housing, so that any oil which might flow past the cover plate 60 will drain back into the lubricant reser- .voir formed by the bearing housing.

A hollow cup-shaped stationary housing 42 arranged in closely spaced relation about the lower reduced portion of the bearing housing 24 and co-axial therewith. An annular overhanging flange 43 is formed on the upper portion of the bearing housing adjacent the lower reduced portion thereof, and extends about an upwardly extending flange 44 formed on the top of the stationary housing 42. This arrangement forms a seal about the top of the stationary housing 42 and excludes foreign substances, such as acids used in the spinning process. A radially extending annular flange 45 is provided with a finished surface 46 adjacent another finished surface 41 near the top of the stationary housing 42 and is arranged to engage finished surfaces around an opening 48 in a spinning frame 49 through which the lower portion of the housing 42 extends. The housing 42 is rigidly secured to the spinning frame 49 by screws 50 extendingthrough the spinning frame and threaded into bosses 5| formed adjacent the upper end of the housing 42. Three axially extending arms 52, integrally formed with the housing 42, project radially and axially therefrom in equidistantly-spaced relation about the periphery of the stationary cupshaped housing, and an annular flexible laminated disk 53 is secured at three equidistant points about its periphery by screws 54 to the arms 52. 'I'he flexible disk is provided with holes 55 at three other points equidistantly-spaced intermediate the first mentioned points, and the bolts 25 which secure the bearing housing 24 to the motor housing I6 extend through the holes 55 and secure the flexible disk 53 to the upper end of the bearing housing 24 in such a manner that the plane of the exible supporting disk 53 is adjacent the upper end of the housing 42 and the lower portion of the bearing housing 24 extends below this plane of support far enough to provide for damping of oscillations thereof by a damping duid 56 retained in the housing 42 in the space between the bearing housing 24 and the stationary housing 42. In this manner, the spinning device is flexibly supported by the annular disks 53, and is free to oscillate to a limited extent when passing through its critical speeds. An annular overhanging flange 51 is formed on the bearing housing 24 and extends over the entire supporting arrangement, thereby shielding it from foreign substances. A filling opening is formed on the stationary housing 42 and the damping fluid 56 can be supplied to the space between the bearing housing and the stationary housing by removal of a lling plug 53, and a drain plug 59 is threaded into an opening in the bottom of the housing 42 to facilitate removal of the damping uid 56. When` the spinning device is brought up to its normal operating speed of between 6,000 R. P. M. and 10,000 R. P. M., it passes through several of its critical speeds. The flexible annular disks 53 have such elastic properties that the emng of these disks produces a restraining force tending to return the spinning device to its normal geometrically vertical axis. 'I'he damping uid 56l Within the space between the bearing housing 24 and the stationary housing 42 effectively dampens vibrations at the critical speeds, and prevents excessive vibrations at these speeds.

While I have illustrated and described one embodiment of my invention, modifications thereof will occur to those skilled in the art. I desire it to be understood therefore that my invention is not to be limited to the particlular arrangement disclosed, and I intend in the appended claims to cover all modifications which do not depart from the spirit and scope of my invention.

What I claim as new and desire to secure by I Letters Patent of the United States is:

1. A spinning device including a vertical shaft, a bearing arranged to support said shaft, a housing for said bearing, a second housing arranged about said bearing housing, and means including a fiuxible annular member secured at spaced Ipoints to said bearing housing and at other points spaced intermediate said first mentioned spaced points to said second housing for flexibly supporting said bearing housing in spaced relation within said second housing, said second housing being arranged to contain a damping fluid therein surrounding said bearing housing.

2. A spinning device including a vertical shaft, a bearing arranged to support said shaft, a housing for said bearing having a lubricant reser voir, means for supplying lubricant to said bearing from said lubricant reservoir,v a cup-shaped housing arranged about said bearing housing, and means including a flexible annular member secured at spaced points to said bearing housing and at lother points spaced intermediate said first mentioned spaced points-to said cup-shaped housing for flexibly supporting said bearing hous-I ing in spaced relation within said cup-shaped housing, said cup-shaped housing being arranged to contain a damping fluid therein surroundingfsaid bearing housing.

3. A spinning device comprising an electric motor including a stationary member and a rotatable member having a vertical shaft, a bearing for said shaft, a bearing housing arranged to support said bearing, a stationary housing arranged in closely spaced relation about the lower portion of said bearing housing forming a fluid reservoir thereabout, a plurality of radially projecting axially extending arms arranged in'spaced relation about said stationary housing, and means including an annular flexible disk arranged in a plane adjacent the upper end or" said stationary housing and secured at spaced points about the periphery of said flexible disk to said bearing housing and at other points spaced intermediate said first mentioned points to said axially extending arms for resiliently supporting said bearing housing on said stationary housing, said fluid reservoir being arranged to contain a damping fluid therein about said bearing housing.

4. A spinning spindle comprising an electric motor including a stationary member and a rotatable member having a vertical shaft, a bearing arranged at the lower end ,of said vertical shaft and a second bearing arranged intermediate the ends of said shaft to support said vertical shaft, said stationary member having a bearing housing arranged to support said bearings, a stationary housing arranged in spaced relation about the lower portion of said bearing housing forming .tor including a stationary member and a rotatable member having a vertical shaft, a .bearing for said shaft, a bearing housing arranged to support said bearing and having an axially extending lower portion of reduced diameter, an annular iiange formed on the upper portion of said bearing housing adjacent said portion of reduced diameter, a stationary housing arranged in closely spaced relation about said lower portion of said bearing housing and forming a fluid reservoir thereabout, a plurality of radially projecting axially extending arms arranged in spaced relation about said stationary housing, means including an annular iiexible disk arranged in a plane adjacent Vthe upper end of said stationary housing and secured at spaced points about the periphery of said laminated disk to said bearing housing and at other points spaced intermediate said iirst mentioned points to said axially extending arms for resiliently supporting said bearing housing on said stationary housing, and a damping viluid contained within said fluid reservoir about said bearfor said shaft, a bearing housing provided with a y lubricant reservoir and arranged to support said bearing, means for supplying lubricant from said lubricant reservoir to said bearing, a stationary housing arranged in closely spaced relation about the lower portion of said bearing housing forming a uid reservoir thereabout, a plurality of radially projecting extending arms arranged in n spaced relation about said .stationary housing, and means including an annular ilexible disk arranged in a plane adjacent the upper end of said stationary housing and secured at spaced points about the periphery of said laminated disk to ,said bearing housing and at other points spaced intermediate said first mentioned points to said axially extending arms for resiliently supporting said bearing housing on said stationary housing, said iiuid reservoir being arranged to contain a damping fluid therein about said bearing housing.

a housing, a stationary housing arranged in spaced relation about a part of said motor housing, and means including a flexible member ar- 7. A support for a vertical shaft motor having" ranged in a plane adjacent the upper end of said f to said stationary housing for resiliently supporting said motor on said stationary housing, said stationary housing being arranged to contain a damping uid therein surrounding said. motor housing.

8. A spinning device comprising an electric motor including a stationary member and a rotatable member having a vertically extending shaft, a bearing for said shaft, a bearing housing arranged to support said bearing and having an axially extending lower portion of'reduced diameter, a stationary housing arranged in closely yspaced relation about said lower portion of said bearing vhousing and forming a iluid reservoir thereabout, a radially projecting element extending from said stationary housing, and means including a iiexible disk secured at spaced apart points about the periphery thereof to said bearing housing and at other points spaced intermediate said rst mentioned points to saidradially projecting element for resiliently supporting said bearing housing on said stationary housing.

FRANK C. LINN. 

